For the real universe counterpart, see Jack Crusher.

In the mirror universe, Black Jack Crusher was a notorious Terran pirate. In 2359, he tried to plunder treasures from the ghost planet Iconia in his ship, the Bonny Beverly. The Beverly was destroyed by a warp core explosion after an encounter with an Iconian probe; Jack died in the explosion. Jean-Luc Picard studied logs from the Bonny Beverly before making his own expedition to Iconia in 2371. (TNG novel: The Worst of Both Worlds)

Although not explicitly stated in the novel, it can be assumed that the Crusher family structure is identical to that of the regular universe, with Wesley being the son of Jack and Beverly.

Dark Mirror continuityEdit

Jack, a Starfleet officer, married Beverly Howard in 2348 (TOS novel: Spectre) but within a matter of months, was being asked by Picard about the likelihood that he'd share Beverly between himself and Picard. Picard halted these queries when Wesley Crusher was born, but continued two years later. Eventually, a fight ensued between the two men and Jack lost "possession" of Beverly. In 2354, when Jack was serving aboard ISS Stargazer, Picard sent Jack with an away team down into a no-win situation, which resulted in the death of all the team, which Picard knew was inevitable (TNG novel: Dark Mirror)